Table of Contents
Advertisement
J902
INPUT BNC
WO 902
10 MHz FROM
+5V
WWV
C901
150pF
R903
C902
270
.01
R901
1k
2
R902
1
CR901
10k
3
RF OUT
OCXO 1
5
Y901
DC IN
10 MHz
C925
.01
CASE GND
4
J901
REMOTE + 6
R905
S904
430
1
8
+5V
R906 200
2
7
+15V
3
6
4
5
R907
2.4k
REMOTE - 5
OCXO + 4
R909
S905
430
1
8
+5V
R910 200
2
7
+15V
3
6
4
5
R911
2.4k
OCXO - 3
+5V
C907
150pF
C908
R919
270
.01
OCXO 2
R917
Y902
1k
Q902
5
3
DC IN
RF OUT
3658
10 MHz
C925
R918
CASE GND
.01
10k
CR906
4
FRONT PANEL SWITCH CONTROLS
P912
NO
+15V
5
S902
OCXO 2
NC
4
TEST
NC
S901
3
OCXO 1
NO
2
TEST
+15V
S903
1
DC ON/OFF
CR908
C913
+15V
F901
.01
2A
J901
1
C925
C926
CR906
2
.01
.01
P913
1
AC/DC SENSE
FROM
2
+15V
POWER
SUPPLY
3
+5V
023-2000-930
4
+15V
C929
C930
C931
C932
.01
.01
.01
.01
+5V
U914D
12
11
13
FAIL STROBE
R962
30k
Q921
3657
+5V
R963
0
Q922
R965
3658
R964
150
1k
NOTES:
1. ALL RESISTORS ARE IN OHMS AND ALL CAPACITORS IN MICROFARADS
UNLESS OTHERWISE SPECIFIED.
+5V
2. IC PIN NUMBERS NOT SHOWN:
C937
PIN NUMBER
C933
C934
C935
C936
IC
+5V
GND
.01
.01
.01
.01
.01
U901, U902, U903, U904
14
7
U905, U910, U912, U914
16
8
C938
C939
C940
C941
C942
U907, U911, U913
.01
.01
.01
.01
.01
C943
C944
C945
C946
C947
C948
.01
.01
.01
.01
.01
.01
10-23
U901B
4
6
5
9
10
U901D
U902B
12
U904D
4
11
6
11
13
10
U901A
5
74HC00
1
3
2
+5V
CR902
6
5
1
2
U908
4
4N35
R908
CR903
10k
U902D
U904A
+5V
U902C
12
74HC04
U903D
CR904
11
9
13
8
1
2
12
10
11
13
6
5
U902A
1
1
3
2
2
U909
4
4N35
R912
CR905
10k
C914
.01
+5V
U914A
74HC08
1
3
2
FAIL STROBE
R949
R948
30k
30k
Q915
Q916
3658
3657
R946
R950
+5V
15k
DC ALARM
15k
R951
R952
STANDBY
0
0
YELLOW
Q917
R954
OK
ALARM
3658
150
GREEN
R953
RED
1k
DS905
ENABLE
P910
J910
1
2
3
DISABLE
R966
1.3k
AC ALARM
OK
ALARM
GREEN
R967
RED
1.3k
DS906
+5V
R968
Q923
30k
3657
R970
10k
Q924
R969
3658
15k
R971
36k
R972
30k
Q925
3658
R977
15k
March 1999
Part No. 001-2009-600
+5V
U906A
1
L904
L905
L906
C916
DS7830J
2
.01
WO 904
.39uH
1.2uH
.39uH
5
3
4
R975
C924
C923
470pF
51
470pF
U901C
+5V
8
C917
10
U906B
L901
L902
L903
11
3.9uH
10uH
3.9uH
.1
WO 903
9
U905
12
13
1
5
C903
C904
CLK
QC
R904
74HC393
51
.0039
.0039
CLR
4
2
R913
B1
10k
3
13
+5V
CLR1
Q1
R914
4
Q1
3.3k
R915 10k
15
11
REXT1
CLR2
+5V
U907
C905
R916
74HC123
.001
4.7k
CEXT
REXT
14
7
1
2
C906
150pF
10
6
B2
CEXT2
Q
5
12
Q2
2
A1
A2
U904B
U904C
3
4
5
6
R920
R921
1M
30k
R922
10k
3
13
+5V
CLR1
Q1
R923
4
Q1
5.1k
R924 10k
15
11
REXT1
CLR2
+5V
U907
C911
R925
74HC123
150pF
270k
+5V
14
7
CEXT1
REXT2
1
C912
.047
PRE
2
2
6
D
B1
CEXT2
U910A
74HC74
3
5
10
12
CLK
Q
B2
Q2
A1
A2
CLR
4
+5V
3
COMP
SIGN
14
IN
IN
U913
R973
4046B
470k
VCO
4
12
A2
OUT
6
C1 A
R974
+ C922
39k
11
2.2
A1
5
R955
C921
INH
1.3k
2.2
+
VCO
7
4
C1 B
OUT
PCP OUT
PC2 OUT
R956
+5V
1
13
1.3k
13
PRE
12 D
8
U910B
Q
74HC74
11
9
CLK
Q
CLR
10
+5V
+5V
R957
Q918
30k
3657
R959
10k
Q919
R958
3658
15k
R960
36k
R961
30k
Q920
3658
R976
15k
10 MHz
CLOSE
REF OUTPUT
UPON
+15V
ALARM
P903
J903
1
R930
27k
Q905
2
3658
1.25 MHz
3
REF OUTPUT TO
OPEN
UPON
8-WAY SPLITTER
+5V
ALARM
R936
OCXO RF OUTPUT
0
Q903
OUTPUT
R927
OK
3658
100
GREEN
DS901
R929
U902C
9
0
8
10
FAIL STROBE
CLOSE
+15V
UPON ALARM
J904
P904
1
R935
27k
Q908
2
U904D
3658
9
8
3
+
FAIL
OPEN
C909
UPON ALARM
22
STROBE
+5V
+ C910
R931
22
0
OCXO 1
Q906
3658
STANDBY
YELLOW
FAIL
R932
ONLINE
100
RED
GREEN
DS902
U903C
9
U912A
8
10
R934
74HC32
FAIL STROBE
0
1
3
2
+5V
CLOSE
+15V
UPON ALARM
P905
J905
1
R940
27k
Q911
2
3658
3
OPEN
UPON ALARM
+5V
R936
0
OCXO 2
Q909
3658
STANDBY
YELLOW
R937
ONLINE
FAIL
100
GREEN
RED
DS903
U903A
74HC08
1
U912B
3
2
R939
74HC32
0
FAIL STROBE
4
6
5
ENABLE
+5V
P906
J906
1
2
3
DISABLE
CLOSE
+15V
UPON ALARM
P907
J907
1
R945
27k
Q914
2
3658
3
OPEN
UPON ALARM
+5V
DELAT F
R941
0
Q912
R927
OK
3658
100
GREEN
DS901
R944
U914B
4
0
6
5
FAIL STROBE
ENABLE
P908
J908
1
2
3
CLOSE
DISABLE
UPON ALARM
J909
P909
1
2
3
OPEN
UPON ALARM
CLOSE
UPON ALARM
J911
P911
1
2
3
OPEN
UPON ALARM
J901
RF OUTPUT ALARM
7 RF ALARM OUT +
1
7
8 RF ALARM OUT -
14
8
K901
OUTPUT
ALARM
RED
R928
150
Q904
3658
+5V
OCXO 1 ALARM
9 OCXO 1 ALARM +
1
7
10 OCXO 1 ALARM -
14
8
K902
R933
150
Q907
3658
OCXO 2 ALARM
11 OCXO 2 ALARM +
1
7
12 OCXO 2 ALARM -
8
14
K903
R938
150
Q910
3658
DELTA F ALARM
13 DELTA F ALARM +
1
7
14 DELAT F ALARM -
14
8
K904
ALARM
RED
R928
150
Q913
3658
+5V
DC ALARM
15 DC ALARM +
1
7
16 DC ALARM -
14
8
2-13
+15V
K905
6
AC ALARM
17 AC ALARM +
1
7
18 AC ALARM -
14
8
+15V
K906
OCXO SCHEMATIC
FIGURE10-28
Advertisement
Table of Contents
